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File:Dc all five.svg|thumb|upright|150px |The five levels of DEFCON The '''DEFense readiness CONdition''' ('''DEFCON''') is an alert state used by the United States Armed Forces. (DEFCON is not mentioned in the 2010 and newer document) The DEFCON system was developed by the Joint Chiefs of Staff (JCS) and Unified Combatant Command|unified and specified combatant commands. It prescribes five graduated levels of readiness (or states of alert) for the U.S. military. It increases in severity from DEFCON 5 (least severe) to DEFCON 1 (most severe) to match varying military situations. DEFCONs are a subsystem of a series of Alert Conditions, or LERTCONs, which also include EMERGCON|Emergency Conditions (EMERGCONs).
Issue4 |pages=99–139 |doi=10.2307/2538543}} It prescribes five graduated levels of readiness (or states of alert) for the U.S. military. It increases in severity from DEFCON 5 (least severe) to DEFCON 1 (most severe) to match varying military situations.
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